Kiln foe drying beick



(No Model.)

C. D. PAGE.

. KILN POR DRYING BRICK.

No. 350,317. A

2 Sheets-Sheet l.

, Patented Oct. 59886.

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(No Model.) 2 Sheets-,Sheet 2.

C. D. PAGE. KILN PoR DRYING BRICK. No. 850,317. Patented Oet. 5, 1886L N m m m I r V f f U l l l :LD :I e.. e e L 3 PJ J I d oeoooo OQO l J J l l IN1 e .www

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UNITED STATES PATENT QEEICE.

l' CLARK D. PAGE, 0E ROCHESTER, NEW YORK.

KILN FOR DRYING BRICK.

SPECIFICATION forming part of Letters Patent N o. 350,317, dated October 5, 1886.

Application filed March 8, 1884.

To all whom t may concern,.-

Beit known that I, CLARK D. PAGE, of the city of Itochester,'county of Monroe, and State of New York, have invented a certain new and useful Improvement in Kilns for Drying Bricks Preparatory to Burning; and Ido hereby declare that the following is a full, clear, and exact description ofthe saine, reference being had to the accompanying drawings, in which- Figure 1 is a longitudinal vertical section of the kiln in line x x of Fig. 2. Fig.l2 is a horizontal section of the same in line y y of Fig. l. Fig. 3 is a front elevation, partially in section, of the same. Fig. 4 is a cross-section inline z z of Fig. l of the furnace enlarged. Fig.5 is an elevation of one of the cars enlarged, looking at right angles to Fig. l. Fig. 6 is a plan view showing two of the pallets for holding the bricks, one loaded with bricks, the other empty. Fig. 7 is aside elevation of a series of the pallets resting one on top of an other.

My improvement relates to apparatus for drying green bricks preparatory to burning; and it consists of a long kiln-say, one hundred feet, more or less-having two independent trunks or passages through one of which cars loaded with the green bricks are run on tracks and subjected to hot air free from gases, and through the other of which (forming a iiue) smoke, gases,and other products of combustion pass Without coming in contact with the bricks, chimneys being used at the. ends of both passages for producing active draft.

'Ihe invention consists in the construction and arrangement hereinafter more fully described, and definitely claimed.

In the drawings, A shows a long kiln-say, one hundred feet (more or less) in lengthand provided with two longitudinal passages or tunnels,B C,which extend the whole length and open outward at theends. A vertical partition or wall, D, extends down through the kiln, running longitudinally, and divides each of the passages B C into two, one running each side of the wall, as shown most clearly in Figs. 2 and 3. The upper passages, B B, have tracks a a, upon which run cars E E,holdingthe green bricks. The cars are run in at one end and out through the other, and

are supposed to become thoroughly dried dur- Serial No. 123,462. (No model.)

ing the passage and to be in condition for burning. At the ends of the passages BBare doors or slides b b, by which the passages are closed to confine the heat, and at one end of the kiln are two chimneys, G G, opening from said passages, for allowing escape of the'heat and for producing an active draft. The bottoms of the passages B B are slightly inclined to allow easy passage of the cars from one end to the other. The cars are insertedat the end where the chimneys are located and delivered A at the opposite end, where the furnace is-situated, so that the excess of heat comes at the last end of the progress. This 4facilitates the escape of the water-smoke, and produces better work. The two lower due-passages, C C, unite in a common discharge at both the front and rear ends. They do not extend through the kiln at the front, but unite'and connect with a iiue -passage, c, which extends up through the division-wall D, and there connects with a single chimney, H. At the rear ends the united passages are enlarged to receive the furnace I and ash-pit K.

The furnace I consists of an arched metallic sheet or jacket inclosing an airspace and set into the brick-work,and fed by draft-holes d d, made through the end of the kiln, which allow freeingress of air. Inside the sheet areaseries of open-ended pipes, f f, which simply furnish radiating surface.

g g g are a series of hollowv heating-tubes, which extend lfrom the rire-chamber through the sheet and serve to heat the air. The hot air from the furnace passes up through an opening, h, into the upper passages, B B, while the gases and products of combustion pass off throughthe ilues C C and escape through the chimney H without comi/ng in contact with the green bricks.

L is a plate, which forms the division ibetween the passagesB and C. Being thin and becoming highly heated, this plate adds heat to the passages B by radiation, so that the heat that passes through the lower liues is econom-ized without admitting gases into the upper passages.

The cars E are each made of square or rectangular form and provided with trucks iz, which run on the tracks a a. The cars are made to fill the cross-'area of the passagesBB, leaving only space for free movement, andthe IOO lower ends of the frame-pieces, to which the trucks are attached, are curved inward, as shown at k lc, Fig. l. By this means the cars may be run together in close contact, thus occupying all available space, and,withoutinter fering with the movement of the cars, also allowing the use of hinged valves or flaps m, hinged on the back of each car and used to prevent the draft from passing under the cars and escaping without coming in contact with the bricks loaded on the cars above. By the use of these valves the hot air is stopped and forced to pass upward through the bricks. Each car is provided with racks or rounds n a, at suitable distances apart, on which are placed the pallets or plates N N, which contain the bricks. Open space is thus left between the bricks for the passage of the draft. The pallets consist of plates of metal or wood of reetangular form, each holding one tier of bricks,

and they are placed side by side on the racks.

Instead of this form, the pallets' may be pro vided with legs p p, and be set one on top of another, as shown in Fig. 7, in which no rounds will be required in the car except the bottom 01168.

The object of this invention is to provide a means for drying green bricks by continuously inserting the cars at one end of the kiln and removing` them at the other end, and without allowing the gases or other products of combustion to pass into the drying-passages. Ithas been found that the gases and other products of coal burning draw 7 the color ofthe bricks, making them streaked and spotted, and also injures the texture and consistency of the bricks by coating the surface more or less. I have therefore devised the plan of a long kiln having one passage for the cars containing the bricks, and a separate liuc-passage extending the whole length of the kiln to carry off the gases.

It has been before proposed to burn bricks by the use of a long kiln, through which cars loaded with bricks are run, the gases and products of combustion passing with the hot air in one volume through the kiln. rlhis I do not claim.

Another advantage in my invention consists in making two separate passages, B B, for the cars, each independent of the other and closed at the ends by doors, so that,when desired, the heat may be alllturned from one passage into the other.

Another advantage also consists in the use of the dividing'plate L, covering the lower ilues their whole length, thereby enabling the heat from the lower lines to be radiated into the passages above.

Having described my invention, I disclaim, broadly, a kiln provided with tracks on which cars can becntered at one end and discharged atthe other. I also disclaim a kiln in which a passage-way for cars ruiming on a track and a iuepassage for the products of combustion are used.

What I claim as new, and desire to secure by Letters Patent, is`

l. A drying-kiln constructed with the four passages B B and C C, separated by the division wall D and fine-plate L, the upper passages serving for the reception of the cars and the lower ones for the passage of the products of combustion, the furnace I at one end of the kiln discharging the hot air into the upper passages and the products of combustion into the lower ones, and the chimneys G G and H, connecting, respectively, with the upper and lower passages and allowing an independent draft through each, as shown and' described, and for the purpose specified.

2. In a drying-kiln, the combination, with the separate upper and lower passages, B B.

and C G, of the furnace I at one end, constructed with radiating pipesff and air-dis charging tubes g g, and the chimneys G G and H at the opposite end of the kiln, connecting,

respectively, with the upper and lower passages, whereby the hot air from the furnace enters the upper passages, and the products of combustion enter the lower passages and are separately discharged, as herein shown and described.

3. In a drying-kiln, the coinbiuatiom with the upper passages, BB, provided with tracks,A

of cars resting on the tracks and constructed with flaps m m, hinged to the backsof the cars at the bottom and directly above the track, whereby the current of the heated air is arrested at the bottom and forced to pass up through the bricks on the cars, as set forth.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

CLARK D. PAGE.

Witnesses:

l?. A. Cos'rrcn, R. F. Oscoop.

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